Coordinate and/or perform additions and changes to network hardware and operating systems, and attached devices; includes investigation, analysis, recommendation, configuration, installation, and testing of new network hardware and software. Provide direct support in the day-to-day operations on network hardware and operating systems, including the evaluation of system utilization, monitoring response time and primary support for detection and correction of operational problems. Troubleshoot at the physical level of the network, working with network measurement hardware and software, as well as physical checking and testing of hardware devices at the logical level working with communication protocols. Maintain network infrastructure standards including network communication protocols such as TCP/IP. Provide technical consultation, training and support to IT staff as designated by the government.